A study released Tuesday by the Centers for Disease Control and the Florida Department of Health finds dengue virus is showing up in the Florida Keys. According to the report, approximately 5 percent of Key West residents, or about 1,000 people, were exposed to it in 2009. So far this year, there have been 12 confirmed cases of dengue in the Key West area. The last time there was a dengue outbreak in Florida was 1934.

""These people had not traveled outside of Florida, so we need to determine if these cases are an isolated occurrence or if dengue has once again become endemic in the continental United States," said Harold Margolis, chief of the dengue branch of CDC in a press release. "We are concerned that if dengue gains a foothold in Key West, it will travel to other Southern cities ... like Miami."FULL POST

The drug, from Vivus Inc., is meant to be used in combination with diet and exercise by obese patients. The drug is a once-a-day, oral, controlled-release formulation of low dose phentermine and topiramate, which is believed to address both appetite and satiety – the two main mechanisms that affect eating behavior, according to the company. FULL POST

Adults with sleep apnea often have more heart trouble than those who sleep soundly, new research from the American Heart Association finds. Unfortunately 90 percent of the people with sleep apnea have never had an official diagnosis, so if a loved one says you gasp for air as you sleep, don't ignore the news.

Sleep apnea is a disorder in which breathing becomes shallow or stops altogether during sleep. It can result in extreme fatigue .

Researchers looked at almost 4,500 adults 40 and older who were free of heart problems when the study began. All adults were tested for sleep apnea and then for the next eight years researchers kept track of the differences in the heart health of those with the condition and those without.FULL POST

A Food and Drug Administration hearing on the safety of Avandia gets under way Tuesday morning. After two days of chewing on evidence, an expert panel will vote – among other things, on whether to yank the popular diabetes drug off the market. It’s been under the microscope for a possible link to heart problems, although the drug’s developer and manufacturer, GlaxoSmithKline, asserts that clinical studies show the drug is safe. A major topic of the hearing will be one of those trials, known as the RECORD study, which was criticized in a blistering analysis published on the FDA website Friday.

The same basic debate about Avandia’s safety was argued before this same panel in 2007, when, members voted overwhelmingly, 22-1, to leave Avandia on the market. That was despite a separate, 20-3 vote, agreeing that the data probably did show a link to heart problems.

Severe depression in men who experience erectile dysfunction is associated with a higher incidence of heart problems, according to a new study in the Journal of Sexual Medicine.

Researchers in Florence, Italy, screened more than 2,000 men for erectile dysfunction and depression, then noted which men later went on to have serious or fatal heart attacks and other cardiovascular problems.

A depressed mood increased the men's' risk. After six years, among the men who weren't depressed, 91 percent avoided all major heart problems. Among the men who were depressed, only 85 percent avoided those problems.

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.